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Diffstat (limited to 'branches/1.0/tinySAK/src/tsk_hmac.c')
| -rw-r--r-- | branches/1.0/tinySAK/src/tsk_hmac.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/branches/1.0/tinySAK/src/tsk_hmac.c b/branches/1.0/tinySAK/src/tsk_hmac.c deleted file mode 100644 index 5e30d21..0000000 --- a/branches/1.0/tinySAK/src/tsk_hmac.c +++ /dev/null @@ -1,226 +0,0 @@ -/* -* Copyright (C) 2009-2010 Mamadou Diop. -* -* Contact: Mamadou Diop <diopmamadou(at)doubango.org> -* -* This file is part of Open Source Doubango Framework. -* -* DOUBANGO is free software: you can redistribute it and/or modify -* it under the terms of the GNU General Public License as published by -* the Free Software Foundation, either version 3 of the License, or -* (at your option) any later version. -* -* DOUBANGO is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with DOUBANGO. -* -*/ - -/**@file tsk_hmac.c - * @brief HMAC: Keyed-Hashing for Message Authentication (RFC 2104) / FIPS-198-1. - * - * @author Mamadou Diop <diopmamadou(at)doubango.org> - * - * @date Created: Sat Nov 8 16:54:58 2009 mdiop - */ -#include "tsk_hmac.h" - -#include "tsk_string.h" -#include "tsk_buffer.h" - -#include <string.h> - -/**@defgroup tsk_hmac_group Keyed-Hashing for Message Authentication (RFC 2104/ FIPS-198-1). -*/ - -/**@ingroup tsk_hmac_group -*/ -typedef enum tsk_hash_type_e { md5, sha1 } tsk_hash_type_t; - -int tsk_hmac_xxxcompute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_hash_type_t type, uint8_t* digest) -{ -#define TSK_MAX_BLOCK_SIZE TSK_SHA1_BLOCK_SIZE - - tsk_size_t i, newkey_size; - - tsk_size_t block_size = type == md5 ? TSK_MD5_BLOCK_SIZE : TSK_SHA1_BLOCK_SIZE; // Only SHA-1 and MD5 are supported for now - tsk_size_t digest_size = type == md5 ? TSK_MD5_DIGEST_SIZE : TSK_SHA1_DIGEST_SIZE; - char hkey [TSK_MAX_BLOCK_SIZE]; - - uint8_t ipad [TSK_MAX_BLOCK_SIZE]; - uint8_t opad [TSK_MAX_BLOCK_SIZE]; - - - memset(ipad, 0, sizeof(ipad)); - memset(opad, 0, sizeof(ipad)); - - /* - * H(K XOR opad, H(K XOR ipad, input)) - */ - - // Check key len - if (key_size > block_size){ - if(type == md5){ - TSK_MD5_DIGEST_CALC(key, key_size, (uint8_t*)hkey); - } - else if(type == sha1){ - TSK_SHA1_DIGEST_CALC((uint8_t*)key, key_size, hkey); - } - else return -3; - - newkey_size = digest_size; - } - else{ - memcpy(hkey, key, key_size); - newkey_size = key_size; - } - - memcpy(ipad, hkey, newkey_size); - memcpy(opad, hkey, newkey_size); - - /* [K XOR ipad] and [K XOR opad]*/ - for (i=0; i<block_size; i++){ - ipad[i] ^= 0x36; - opad[i] ^= 0x5c; - } - - - { - tsk_buffer_t *passx; // pass1 or pass2 - int pass1_done = 0; - - passx = tsk_buffer_create(ipad, block_size); // pass1 - tsk_buffer_append(passx, input, input_size); - -digest_compute: - if(type == md5){ - TSK_MD5_DIGEST_CALC(TSK_BUFFER_TO_U8(passx), TSK_BUFFER_SIZE(passx), digest); - } - else{ - TSK_SHA1_DIGEST_CALC(TSK_BUFFER_TO_U8(passx), TSK_BUFFER_SIZE(passx), (char*)digest); - } - - if(pass1_done){ - TSK_OBJECT_SAFE_FREE(passx); - goto pass1_and_pass2_done; - } - else{ - pass1_done = 1; - } - - tsk_buffer_cleanup(passx); - tsk_buffer_append(passx, opad, block_size); // pass2 - tsk_buffer_append(passx, digest, digest_size); - - goto digest_compute; - } - -pass1_and_pass2_done: - - return 0; -} - - -/**@ingroup tsk_hmac_group - * - * Calculate HMAC-MD5 hash (hexa-string) as per RFC 2104. - * - * @author Mamadou - * @date 12/29/2009 - * - * @param [in,out] input The input data. - * @param input_size The size of the input. - * @param [in,out] key The input key. - * @param key_size The size of the input key. - * @param [out] result Pointer to the result. - * - * @return Zero if succeed and non-zero error code otherwise. -**/ -int hmac_md5_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_md5string_t *result) -{ - tsk_md5digest_t digest; - int ret; - - if((ret = hmac_md5digest_compute(input, input_size, key, key_size, digest))){ - return ret; - } - tsk_str_from_hex(digest, TSK_MD5_DIGEST_SIZE, *result); - (*result)[TSK_MD5_STRING_SIZE] = '\0'; - - return 0; -} - - -/**@ingroup tsk_hmac_group - * - * Calculate HMAC-MD5 hash (bytes) as per RFC 2104. - * - * @author Mamadou - * @date 12/29/2009 - * - * @param [in,out] input The input data. - * @param input_size The Size of the input. - * @param [in,out] key The input key. - * @param key_size The size of the input key. - * @param result Pointer to the result. - * - * @return Zero if succeed and non-zero error code otherwise. -**/ -int hmac_md5digest_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_md5digest_t result) -{ - return tsk_hmac_xxxcompute(input, input_size, key, key_size, md5, result); -} - -/**@ingroup tsk_hmac_group - * - * Calculate HMAC-SHA-1 hash (hexa-string) as per RFC 2104. - * - * @author Mamadou - * @date 12/29/2009 - * - * @param [in,out] input The input data. - * @param input_size The Size of the input. - * @param [in,out] key The input key. - * @param key_size The size of the input key. - * @param [out] result Pointer to the result. - * - * @return Zero if succeed and non-zero error code otherwise. -**/ -int hmac_sha1_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_sha1string_t *result) -{ - tsk_sha1digest_t digest; - int ret; - - if((ret = hmac_sha1digest_compute(input, input_size, key, key_size, digest))){ - return ret; - } - tsk_str_from_hex((uint8_t*)digest, TSK_SHA1_DIGEST_SIZE, *result); - (*result)[TSK_SHA1_STRING_SIZE] = '\0'; - - return 0; -} - -/**@ingroup tsk_hmac_group - * - * Calculate HMAC-SHA-1 hash (bytes) as per RFC 2104. - * - * @author Mamadou - * @date 12/29/2009 - * - * @param [in,out] input If non-null, the input. - * @param input_size The size of the input. - * @param [in,out] key The input key. - * @param key_size The size of the input key. - * @param result Pointer to the result. - * - * @return Zero if succeed and non-zero error code otherwise. -**/ -int hmac_sha1digest_compute(const uint8_t* input, tsk_size_t input_size, const char* key, tsk_size_t key_size, tsk_sha1digest_t result) -{ - return tsk_hmac_xxxcompute(input, input_size, key, key_size, sha1, (uint8_t*)result); -} - |
